Simsima
Simsima is an eSIM marketplace offering instant connectivity in 190+ countries. Travelers can browse, purchase, and activate eSIMs directly from their phone — no physical SIM swap needed. Plans range from 1-day local passes to multi-country regional bundles, with coverage across Europe, Asia, the Americas, and beyond. Simsima supports all eSIM-compatible devices and offers 24/7 customer support based in Barcelona.
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For new userSimsima eSIM Data Plans for Japan
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Simsima for Japan FAQ
Does Simsima offer unlimited data eSIM for Japan?
Simsima does not provide a truly unlimited data eSIM for Japan; all plans marketed as “Unlimited” give 3 GB per day and, once that quota is reached, the speed is throttled to 1000 kbps. Travelers who need more high‑speed data can choose a fixed‑data plan instead. For instance, a 100 GB plan that lasts 180 days costs $178.50 USD, while a 50 GB plan valid for 30 days is priced at $45.95 USD. These fixed‑data options may be more cost‑effective for heavy data users than the capped daily plans.
Does Simsima offer Japan eSIM with phone number and SMS?
Simsima does not provide a phone number or SMS capability on its Japan eSIM plans; only data‑only plans are available. Travelers can still use VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection for calls and messaging, but they should check that these services are accessible in Japan before purchasing.
How many data plans does Simsima offer for Japan?
Simsima offers a total of 32 data plans for Japan, split into 14 single‑country plans and 18 multi‑country plans. The plans range in price from about $1.50 to $178.50 and provide data caps between 100 MB and 100 GB, with validity periods from 5 to 365 days. Among these, 7 plans feature a daily data cap that resets each day, while 25 plans offer a fixed data amount that does not reset until the validity period ends.
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